the reason legged locomotion dominates terrestrial creatures is simple: uneven terrain. otherwise animals would have wheels, since it's more efficient on relati

the reason legged locomotion dominates terrestrial creatures is simple: uneven terrain. otherwise animals would have wheels, since it's more efficient on relatively flat surfaces. this is really the only (broad) use case for legged robots, which is why the military is interested in it but BD struggles to find commercial success.